The information provided on this site is based on the results of in-vehicle testing of the UK Mobile GSM networks of O2, Orange, T-mobile, and Vodafone.

The results of this testing can vary over time and do not represent a guarantee of performance for any network.

Performance of any of the networks represented on this site is only indicative of the network performance of the network under the specific test conditions at the time of testing and at the exact location of testing as described within this website.

The results shown in this website do not represent an overall aggregation of performance for an area shown within any of the maps displayed within this website.